MX2013010174A

MX2013010174A - Multiple viewpoint image display device.

Info

Publication number: MX2013010174A
Application number: MX2013010174A
Authority: MX
Inventors: Sergey Shestak; Dae-Sik Kim; Kyung-Hoon Cha
Original assignee: Samsung Electronics Co Ltd
Priority date: 2011-03-04
Filing date: 2012-03-02
Publication date: 2013-10-25
Also published as: CN103403607A; WO2012121520A2; KR20120100821A; EP2682805A4; US20130335538A1; WO2012121520A3; EP2682805A2; BR112013022090A2; JP2014512560A

Abstract

Disclosed is a multiple viewpoint image display device. The device comprises: an image panel comprising a plurality of pixels arranged in a plurality of rows and columns; a backlight unit for providing light to the image panel; a parallax part disposed on the front surface of the image panel; and a mask part which is disposed between the image panel and the backlight unit and partially masks each of the plurality of pixels. Consequently, resolution balance can be matched without interference.

Description

MULTIPLE POINT IMAGE DISPLAY DEVICE VIEW TECHNICAL FIELD The present disclosure relates in general to a device for displaying images of multiple vision points, and more particularly to a device for displaying a multi-point of view image, which performs a partial masking of pixels using a masking area.

ANTECEDENTS OF THE TECHNIQUE With the development of electronic technology, various types of electronic devices have been developed and disseminated. In particular in recent years, display devices, such as televisions, which are household appliances that are used mainly in the home in general, have been developed at high speed.

As the performance of the display devices has progressed, the types of content displayed on the display device have also been increasing. In particular, stereoscopic 3D visualization systems, which can display uniform 3D content, have been developed and disseminated recently. 3D display devices can be implemented not only by 3D TVs used in the home in general, but also by various types of display devices, such as monitors, cell phones, personal digital assistants (PDAs), desktop computers , tablet computers, digital photo frames, and kiosks. In addition, 3D viewing technology can be used not only for domestic use, but also in various fields that require 3D images, such as in science, medicine, education, advertising, and computer games.

The 3D visualization system is classified briefly into the type of eyeglassless system, which can be seen without glasses, and in the type of eyeglass system, which can be seen by wearing eyeglasses. The type of eyeglass system can provide a satisfactory 3D effect, but a spectator must wear glasses that cause discomfort. In contrast, the type of eyeglassless system has the advantage that the viewer can see a 3D image without glasses, and the development of such a system type without glasses has been discussed continuously.

Figure 1 is a view illustrating the configuration of a 3D display device of the non-goggle type, in the related art. With reference to Figure 1, the 3D display device in the related art includes a backlight unit 10, an image panel 20, and a parallax portion 30.

The parallax portion may include a series of opaque screen slots which is known as a parallax barrier, or a lenticular lens array. In Figure 1, the parallax portion is implemented by a lenticular lens array.

With reference to Figure 1, the image panel 20 includes a plurality of pixels that are grouped into a plurality of columns. An image at a different viewing point is available for each column. With reference to Figure 1, a plurality of images 1, 2, 3 and 4 at different viewing points are repeatedly arranged in order. That is, the respective pixel columns are arranged as groups numbered 1, 2, 3 and 4. A graphical signal that is applied to the panel is arranged in a way that pixel column 1 shows a first image, and pixel column 2 show a second image.

The backlight unit 10 provides light to the image panel 20. By light that is provided from the backlight unit 10, the images 1, 2, 3 and 4, which are formed in the image panel 20 , they are projected onto the parallax portion 30, and the parallax portion 30 distributes the respective projected images 1, 2, 3 and 4 and transfers the distributed images in a direction towards the viewer. This is, the parallax portion 30 generates exit pupils at the viewer's position, that is, at a viewing distance. The thickness and diameter of a lenticular lens in the case where the parallax portion is implemented by a lenticular lens array, and the spacing of the slots in the case where the parallax portion is implemented by the parallax barrier, it can be designed so that the exit pupils that are generated by the respective columns are separated at an average inter-pupillary distance of less than 65 mm. The separated lights of the image form areas of vision respectively. That is, as illustrated in Figure 1, the viewing areas 1, 2, 3 and 4 are formed.

In this state, if the left eye of the user 51 is located in the viewing area 3 and the right eye 52 is located in the viewing area 2, the user can feel the effect in 3D, even without special glasses.

However, in the 3D display device in the related art, since a plurality of images are separated by vertical columns to be displayed, the vertical resolution is maintained as it is, but the horizontal resolution is considerably reduced. For example, in the case where an XGA panel having a resolution of 1024 x 768 is applied to a 4-point-of-view 3D visualization device, the resolution becomes 256 x 768. As a result, the monitor possesses a full panel resolution in the vertical direction, but has 1/4 resolution in the horizontal direction. · In order to solve this problem, USP 6.1 18,584 discloses that a loss of resolution between the vertical and horizontal resolutions is dispersed by changing the arrangement of the pixels. However, this technology has the problem that an LCD panel in the related art, which has a general arrangement of pixels, can not be used by said technology.

Another method for solving the problem described above is disclosed in USP 6,064,424. According to this method, however, due to the difference in the arrangement between the columns of pixels and the lenticular, the light emitted from other pixels overlaps them, and interference occurs between the images. "Interference" means a phenomenon in which the (N + 1) -th or (N-1) -th image is mixed and displayed through the user's right or left eye, in addition to the N-th image. In this case, the same object is displayed in other views, and if the interference occurs, several outlines of the object with blur appear. Consequently, if the interference increases, the quality of the image deteriorates.

According to the related technique as described above, it can not effectively solve the problem described above, of the deterioration of the horizontal resolution.

DIVULGATION TECHNICAL PROBLEM The present disclosure has been made to address the problems previous Accordingly, one aspect of the present disclosure provides a multi-point of view visualization device, which can effectively disperse a loss of resolution between vertical resolution and horizontal resolution.

TECHNICAL SOLUTION According to one aspect of the present disclosure, a multi-viewpoint image display device includes an image panel that includes a plurality of pixels configured to be arranged in a plurality of rows and columns; a backlight unit configured to provide light to the image panel; a parallax portion configured to be arranged on the front surface of the image panel; and a mask portion configured to be disposed between the image panel and the backlight unit to partially mask the plurality of pixels.

Here, the mask portion can include a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of masking areas can be divided into a vertical direction to a light transmitting area and a blocking area of light, and the light blocking unit can be arranged in a zigzag with respect to the pixels arranged in the direction of a row.

The light blocking area may have a size of half the corresponding pixel, and the light transmitting area may have a size of the other half of the corresponding pixel.

The plurality of masking areas can be aligned as a plurality of columns, and the direction of the zigzag arrangement of the light blocking area can be inverted for each of the columns of the respective masking areas.

Even in this case, the light blocking area may have a size of the half of the corresponding pixel, and the light transmitting area may have a size of the other half of the corresponding pixel.

The mask portion may include a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of masking areas may be divided into a light transmitting area and a light blocking area, and the Light transmitter can be formed in a diagonal direction in the respective masking areas.

The mask portion may include a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of masking areas may be divided into a light transmitting area and a light blocking area, the transmitting area of light can be formed to be connected in a diagonal direction in at least two of the masking areas which are arranged in parallel in the direction of a row between the plurality of masking areas, and the light blocking area, can be formed in a remaining area, except for the light transmitting area in the masking area.

The mask portion may include a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of masking areas may be divided into a light transmitting area and a light blocking area, the transmitting area of light can be formed in a diagonal direction in the plurality of masking areas and the light transmitting areas formed in the respective masking areas can be connected to each other.

The image panel can be a UD (Ultra Definition) panel that does not include a color filter.

The image panel can sequentially display color signals for each pixel according to an FSC (Sequential Field Color) method, and the backlight unit can provide a plurality of lights of different colors to the respective pixels in the panel of the image in synchronization with a display operation of the image panel.

The image panel can display an image of multiple view points, by combining the plurality of pixels included in the plurality of rows and continuous columns.

The image panel can display an image of 12 view points by combining 6 pixels arranged continuously in one horizontal direction and two pixels continuously arranged in a vertical direction.

The parallax portion may include a lenticular lens from which a plurality of lens areas are arranged in the direction of a column, and the width of each of the lens areas corresponds to the size of each of the plurality of pixels.

The parallax portion may include a parallax barrier from which a plurality of barrier areas are disposed in the direction of a column, and the width of each of the barrier areas corresponds to the size of each of the pluralities of pixels.

ADVANTAGE EFFECTS According to the different embodiments of the present disclosure as described above, the loss of resolution is adequately dispersed in the vertical and horizontal directions, as the image of multiple vision points is provided, and thus the deterioration of the Image quality can be avoided.

DESCRIPTION OF THE DRAWINGS The above aspect and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which: Figure 1 is a view illustrating the configuration of a 3D display device of the non-goggle type, in the related art; Figure 2 is a view illustrating the configuration of an image viewing device of multiple viewing points, according to one embodiment of the present disclosure; Figures 3 to 6 are views illustrating the configuration of a masking pattern according to various embodiments of the present disclosure; Figure 7 is a view illustrating the detailed configuration of a multi-point of view visualization device; Figure 8 is a view illustrating the detailed view of a mask portion; Figure 9 is a view illustrating another example of the configuration detailed image display device of multiple view points; Figure 10 is a view explaining the operation of a masking pattern; Figure 11 is a view explaining a method for displaying an image of multiple viewing points, on a panel of the image having a color filter; Figure 12 is a view explaining the operation of an image viewing device of multiple vision points, according to an FSC method; Figure 13 is a view explaining a method. for displaying an image of multiple viewing points using a plurality of pixels; Figure 14 is a view explaining an image of multiple viewing points visualized by the method of Figure 13; Figure 15 is a view explaining a method of displaying multiple viewing points, according to an FSC method; Y Figure 16 is a view illustrating another configuration example of a mask portion.

THE BEST MODE FOR THE INVENTION In the following, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Figure 2 is a view illustrating the configuration of an image viewing device of multiple vision points, according to one embodiment of the present disclosure. A multiple view point image display device of Figure 2 is a device that performs a stereoscopic display in a non-eyeglass method. The multiple view point image display device of Figure 2 can be implemented by various types of display devices, such as televisions, monitors, cell phones, personal digital assistants (PDAs), desktops, tablet computers, digital photo frames, and kiosks.

With reference to Figure 2, the multiple view point image display device includes a backlight unit 10, a mask portion 120, an image panel 130, and a parallax portion 140.

The backlight unit 1 10 provides light in the direction of the panel of the image 130. The backlight unit 1 10 is divided into a direct type and an edge type, depending on where the light emitting elements are placed. . According to the direct type, the light emitting elements are arranged uniformly on the rear surface of the panel of the image 1 30, to emit light directly towards the panel of the image 130. In contrast, according to the type of At the edge, the light emitting elements are arranged on the edge side of the panel of the image 130, to reflect the light in the direction of the image panel 130, using a light guide sheet.

The backlight unit 1 10 may be a general backlight unit that is typically applied to the LCD panel or a sequential backlight unit that is applied to an FSC (Sequential Field Color) LCD monitor. That is, the type of backlight unit 1 1 0 may differ depending on the type of image panel 130.

The image panel 130 includes a plurality of pixels arranged in a plurality of rows and columns. The image panel 1 30 can be implemented by an LCD panel, and each of the pluralities of pixels can be implemented by a liquid crystal cell. If the light generated by the backlight unit 1 10 is incident with the respective pixels of the image panel 130, the image panel 130 adjusts the transmission rate of the light incidence to the pixels, according to a signal from image, and display an image. Specifically, the image panel 130 includes a liquid crystal layer and two electrodes that are formed on both surfaces of the liquid crystal layer. If a voltage is applied to the two electrodes, an electric field is generated to move the molecules of the liquid crystal layer, and in this way the rate of light transmission is adjusted. The image panel 130 divides the respective pixels by columns, and activates the respective pixel columns so that images of different viewing points are displayed for the respective columns.

The image panel 130 may be a general panel having a color filter, or a panel operating in an FSC (Sequential Field Color) activation method. The FSC activation method may be referred to differently, as a sequential field method or a sequential color activation method. The FSC activation method is a method that temporarily divides the lights R, G and B and projects the split lights sequentially without using a color filter.

The parallax portion 140 is disposed in front of the image panel 130 to disperse the light that is emitted from the image panel 130 to the viewing areas. As a result, light corresponding to the image of different vision points is emitted by viewing areas. The parallax portion 140 can be implemented by a parallax barrier or a lenticular lens array. The parallax barrier is implemented by a matrix of transparent slots that includes a plurality of barrier areas. Consequently, the parallax barrier operates to emit lights from the image of different viewing points, by viewing areas by blocking the light by means of the slits between the barrier areas. The width and inclination of the slit can be designed differently, depending on the number of mink point images included in the image of multiple viewing points and in the viewing distance. The lenticular lens array includes a plurality of lens areas. Each lens area is formed with a size corresponding to at least one column of pixels, and scatters the light that transmits the pixels of the respective pixel columns differently, by viewing areas. Each lens area may include a circular lens. The slope and radius of curvature of the lens can be designed differently, depending on the number of the mink point images and the viewing distance.

Figure 2 illustrates the portion of parallax 40 that is implemented by a lenticular lens array, but is not limited thereto.

The parallax portion 140 is configured to coincide with the column direction of the respective pixels provided in the image panel 130.

The mask portion 120 partially masks the respective pixels of the image panel 130. Specifically, the mask portion 120 is disposed between the backlight unit 10 and the image panel 130, to partially block the incidence of light to the respective pixels. The mask portion 120 is divided into a plurality of masking areas.

The mask portion 20 can be arranged as close as possible to the rear surface of the image panel 130. The mask portion 120 can be formed on the rear surface of the image panel 130 or it can be disposed on the surface side rear of the image panel 130 in a state where the mask portion 120 is formed on a separate substrate. The light transmitting area can be made by etching a layer of an opaque material, such as metal, laminated onto a glass substrate. The mask portion 120 1 It does not work like a parallax barrier.

The mask portion 120 can be implemented to have various shapes depending on the modalities.

By means of the mask portion 120, the parallax portion 140 can provide a selective view of the respective pixels. That is, the mask portion 1 0 causes the light, corresponding to a portion of different vision point images, to be emitted to the side of the parallax portion 140, by partially masking the plurality of pixels belonging to the same column of the image panel 130. The parallax portion 140 provides an image that is focused on a position that is spaced a predetermined distance which is known as the viewing distance. The position on which the image is formed is called an area of vision. In Figure 2, four viewing areas 1, 2, 3 and 4 are illustrated. Accordingly, if the left eye of the user 51 is located in the viewing area 2 and the right eye 52 is located in the viewing area 3, the user can feel the effect in 3D. In contrast, the eye that is located in the viewing area 3 can see the image displayed in the number 2, but can not see other images. The eye has similar characteristics in other areas of vision. On the other hand, since the parallax portion 140 is disposed along the direction of the column, it can not exert any influence in the vertical direction, and the viewing area extends in the horizontal direction. Since the parallax portion 140 is arranged along the pixel columns of the image panel 130, the left and right interference does not occur in the display device.

Figures 3 to 6 are views illustrating various examples of configuration of the mask portion.

Figure 3 indicates the configuration of the mask portion 120, and the panel of corresponding images 130 and parallax portion 140. As illustrated, masking portion 120 includes a plurality of masking areas that are arranged in a plurality of rows H1, H2, H3 and H4, and columns V1 to V6. Each masking area includes a light transmitting area and a light blocking area. According to Figure 3, each masking area is divided in the vertical direction, and in this way it is divided into the light transmitting area and the light blocking area. In addition, the light blocking area is arranged in a zigzag with respect to the pixels arranged in the direction of the row. Specifically, in the masking area which is located in row 1 and column 1, the light transmitting area 1 a is arranged on the left side, and the light blocking area 1 b is arranged on the right side. In the masking area which is located in row 2 and column 1, the light transmitting area 2a is arranged on the right side, and the light blocking area 1b is arranged on the left side. In Figure 3, the light blocking area 1b or 2b of the mask portion 120 has a size of one half of the corresponding pixel, and the light transmitting area 1a or 2a has a size of the other half of the corresponding pixel.

In Figure 3, the image panel operates in accordance with the configuration of the mask portion 120. According to Figure 3, in the image panel 130, four pixels p1, p2, p3 and p4 which are located in a 2x2 matrix, indicate images of different points of view. Each pixel corresponds to the size of a masking area. In addition, each lens area of the parallax portion 140 which is implemented by the lenticular lens array, has a size corresponding to two columns of pixels V1 &V2, V3 &V4, and the like. As illustrated in Figure 3, the image panel 130 displays an image of multiple view points, by combining the plurality of pixels included in the plurality of rows and continuous columns. According to Figure 3, four pixels included in two rows and two columns display images of 1, 2, 3 and 4 viewing points. In this case, the right half of the area of pixels P1 and P2 of row 1 is masked, and the left half of the area of pixels P3 and P4 of row 2 is masked. Consequently, the light corresponding to the image is emitted by the areas without masking the respective pixels. The unmasked areas appear as if they were arranged in the order of a chessboard. That is, as illustrated in Figure 2, four pixel light beams are formed in the viewing area. Figure 4 illustrates another example of configuration of the mask portion. According to Figure 4, mask portion 120 includes a plurality of masking areas which are arranged in the plurality of rows H1, H2, H3 and H4 and columns V1 to V6. Each masking area includes a light transmitting area and a light blocking area. According to Figure 4, each masking area of the mask portion 120 is divided in the vertical direction, and is thus divided into the light transmitting areas 1 a and 2 a, and in the light blocking areas 1 b and 2 b. In addition, the light blocking areas are arranged in a zigzag with respect to the pixels arranged in the direction of the row. In addition, the positions of the light-blocking areas differ by columns. That is, as illustrated in Figure 4, the direction of the zigzag arrangement of the light blocking areas can be inverted for the respective columns of the masking areas. Accordingly, in column V1, the light blocking areas are arranged in the order of right, left, right and left, and in column V2, the light blocking areas are arranged in the order of left, right, left and right. In Figure 4, the image panel 130 operates in accordance with the configuration of the mask portion 120 as shown in Figure 4. According to Figure 4, the images of the viewing points 1, 2, 3 and 4 are displayed by means 1 of four pixels P1, P2, P3 and P4, scattered and arranged in row 2 and column 2. Accordingly, the 4-visions visualization becomes possible.

Figure 5 illustrates yet another example of configuration of the mask portion. According to Figure 5, the mask portion 120 includes a plurality of masking areas that are arranged in the plurality of rows H1, H2, H3 and H4 and columns V1 to V6. Each masking area includes a light transmitting area and a light blocking area. In the masking area, the light transmitting areas 1 a, 2 a and 3 a are formed in a diagonal direction, and the light blocking areas 1, 2 b and 3 b are formed in the remaining areas.

With reference to Figure 5, at least two masking areas that are arranged one by one in the row direction between the plurality of masking areas, are connected in a diagonal direction. That is, the light transmitting areas 2a and 3a in row 1, and columns 2 and 3 are connected to each other, and the transmitter areas in the next row, and in the row that follows the next are connected to each other . However, such connections are not limited to those illustrated in Figure 5, and each light transmitting area can be formed in a diagonal direction for a masking area.

According to Figure 5, in the image panel 130, different vision point images are displayed in four pixels P1, P2, P3 and P4, which are included in two rows and two columns. A part of each image is masked by the light blocking area, and only a part of the light is emitted to the viewer's side.

Figure 6 illustrates yet another example of configuration of the mask portion. According to Figure 6, in the same manner as in Figure 5, the light transmitting areas are formed in a diagonal direction in the areas of respective masking, and in particular, the light transmitting areas are continuously connected in the direction of the row. According to Figure 6, the light transmitting area 1 a and 2 a in the masking area which is located in the first and second rows of the first column, are connected to the light transmitting areas 4 a and 5 a of the area of masking that is located in the third and fourth rows of the second column.

According to Figure 6, in the image panel 130, images of the different viewing points 1, 2, 3 and 4 are displayed in four pixels P1, P2, P3 and P4, which are scattered in two rows and two columns .

In Figures 5 and 6, an angle of inclination of the light transmitting area in the masking area can be configured differently. As an example, the inclination angle T can be calculated using the following equation.

T = Atan (Ph / (NPv)) Where Ph denotes a horizontal tilt of the image panel, Pv denotes a vertical tilt of the image panel, and N denotes the number of rows in a basic set of pixels. In Figures 3 to 6, only four rows and six columns are illustrated. However, this is for convenience in explanation, and a greater number of rows and columns can be applied to a real product.

Figures 3 to 6 illustrate that the parallax portion 140 is implemented by a lenticular lens array. As described above, for example, in order to display four views in the image panel 130, the panel is divided into the unit of 2x2 pixels in the vertical direction. The two upper pixels belong to vision 1 and vision 3, and the two lower pixels belong to vision 2 and vision 4. Mask portion 120 partially masks the respective pixels. As a result, the parts of the four pixels are scattered without overlap The lenticular lens matrix scatters the light emitted from the parts of the pixels. As illustrated, the viewing areas are illustrated in the form of four rectangles which are numbered as 1 to 4. As a result, if the original resolution of the panel is 1024x768 (XGA), each of the four views can be displayed with the resolution of 512x384 That is, the resolution reduction is dispersed to the vertical resolution and the horizontal resolution. In addition, since the lenticular lenses are arranged along the pixel columns and half the illuminated area of the pixel does not overlap a vertical projection, no interference occurs between the respective views.

As described above, the parallax portion 140 can be implemented by a parallax barrier. The parallax barrier may have a structure in which the plurality of the barrier areas are arranged in the direction of the column. In this case, the width of the area of the barrier can be of the size corresponding to the size of the plurality of the pixels. Since the operation in the embodiment where the parallax portion 140 is implemented by means of the parallax barrier, is similar to the operation of the display device having the lenticular lens array as described above, the duplicate explanation and illustration will be omitted.

As described above, the image panel 130 can be a general panel having a color filter, or it can be a panel operating in the FSC (Sequential Field Color) activation method.

Figure 7 illustrates the configuration of a display device having the color filter. Figure 7 is a cross-sectional view of the upper side of the display device on the underside thereof. Although the parallax portion 140 is omitted in Figure 7, the parallax portion may be formed on the surface 1 front of the image panel 130.

With reference to Figure 7, the image panel 130 includes a rear polarizer 131, a rear surface 132, a liquid crystal layer 133, a color filter 134, a front substrate 135, and a front polarizer 136.

If the white light, which is emitted from the backlight unit 110 and penetrates the mask portion 120, is incident to the rear polarizer 131, the rear polarizer 131 only passes the light in a predetermined polarization direction. The penetrating light is changed by the light having different attributes depending on the transmission rate of the respective liquid crystals, and the value of the color as the light passes through the rear substrate 132, the liquid crystal layer 133, the color filter 134, and the front substrate 135, and then it is emitted through the front polarizer 136. The emitted light is scattered by means of the parallax portion and is provided to a plurality of viewing areas.

In addition, the mask portion 120 includes a mask substrate 121 and a mask pattern 122. The detailed shape of the mask portion 120 is shown in Figure 8. Referring to Figure 8, the mask 122 is formed on the surface of the mask substrate 121 in a state where a predetermined area thereof is open. As illustrated in Figures 3 to 6, the size, shape and position of the open area can be determined differently in various modalities. The respective light transmitting areas can be filled with a transparent material.

If the number of light-transmitting areas is counted in the horizontal direction, it may be equal to or greater than the number of pixel columns in the image panel. The horizontal size of the light transmitting area is smaller than the horizontal pixel size of the image panel. For example, as illustrated in Figures 3 and 4, it may correspond to the size of about half the pixel.

In addition, the images corresponding to the four viewing points can be displayed on the LCD panel, so that the images are arranged in a group of 2x2 pixels that have two rows and two columns as illustrated in Figures 3 to 6 This arrangement is different from the arrangement in the related art at the point of the corresponding pixel arrangement. According to the arrangement of the pixels to express 4-point-of-view images in the related art, the horizontal resolution is reduced to 1/4, and in this way the quality of the image deteriorates. However, according to the 2x2 pixel arrangement of the present disclosure, the vertical and horizontal resolutions are respectively reduced to 1/2, and in this way the degree of deterioration of the image quality can be reduced compared to that in the related art. The number of the light transmitting area may be equal to the number of pixels, or it may be designed as a value obtained by multiplying the number of pixels by a predetermined natural number.

As illustrated in Figures 5 and 6, the light transmitting areas may be aligned along a line in a state where the light transmitting areas are inclined at a predetermined angle with respect to the respective pixel columns of the panel of images. The light transmitting areas, which are arranged along the same line, can be joined in a transparent line. The number of lines can be equal to the number of the respective pixel columns of the image panel 130. In addition, the number of lines can be determined according to the number of 3D visions and the arrangement of the pixels of the image.

On the other hand, in order to partially recycle the light, the light emitted from the backlight unit 1 10, can be reflected to the backlight unit 1 10 by the opaque area of the mask 121, that is, the light blocking area, to be recycled. The details of the same will be described later.

Various sizes and shapes of the respective constituent elements of the image panel 130 can be configured. For example, the color filter 134 may have a thickness of 0.4 to 0.7 mm. The rear polarizer 131 and the front polarizer 136 may be implemented in the form of a film having a thickness of 0.15 to 0.2 mm.

The color filter 134 is a configuration that is adopted in the case where the image panel 130 is not of the sequential color type, and it is an RGB color filter. The mapping of data by color using the color filter 134 is illustrated in Figure 11. The color pixels that correspond to the color columns are indicated as R, G and B.

In order to reduce the distance between the mask 122 and the pixel plane, the mask portion 120 is coupled so that the surface of the mask substrate 121, on which the mask 122 is formed, faces the rear surface of the mask. image panel 130.

On the other hand, in order to further reduce the distance between the mask 122 and the pixel plane, the mask portion 120 can be mounted within the image panel 130. An example of such a configuration is illustrated in Figure 9.

With reference to Figure 9, the rear polarizer 131 is placed next to the backlight unit 1 10, and then the mask portion 120 is placed. Subsequently, the rear surface 132, the liquid crystal layer 133, the filter of color 134, the front substrate 135, and the front polarizer 136 can be arranged sequentially. Accordingly, the gap between the mask 122 and the liquid crystal layer 133 can be minimized.

Figure 10 is a view illustrating an example configuration of the mask portion 120 for recycling a light. With reference to Figure_10, mask portion 120 includes a mask substrate 121 and mask 122.

From the light emitted from the backlight unit 1 10, the light which is directed to the light transmitting area in the mask 122 passes through the light transmitting area, and the light which is directed to the light blocking area is reflected to the backlight unit 1 10. For this, the mask 122 can be made of a material having a high reflection rate, or a reflection layer which is made of a material having a high reflection rate can be forming on the bonding surface between the mask 122 and the mask substrate 121. For example, aluminum can be used.

The light that is reflected by the mask 122 is scattered by the backlight unit 10, and forms a secondary light. A part of the secondary light is incident to the light transmitting area to reduce a loss of light due to the mask 122.

In addition, in the case where a reflective polarizer (not shown) is used for the light transmitting area of the mask 122, the loss of light is reduced. The reflective polarizer can reflect light that has polarization that is not used on the LCD screen. The polarization of the reflected light is extinguished in the backlight by the scattering, so that the light that falls back on the mask has an adequate polarization and quantity of light.

Figure 1 shows an example of a method for mapping the color data by the pixels in the image panel 130 having a color filter. In Figure 11, the parallax portion 140 is implemented by a lenticular lens array. The lenticular lens array has a plurality of lens areas each of which has a size corresponding to two pixel columns.

The image panel 130 displays the data of different colors with respect to four pixels that are scattered to two pixel columns and two rows of pixels. Accordingly, R, G, and B are provided uniformly with respect to the same viewing area. That is, in the first row, R1, B1, and G1 are respectively displayed on the pixels of the first, third, and fifth pixel columns. R1, B1 and G1 are provided to one of the pluralities of the display areas. For example, in an environment as shown in the figure. 2, if it is assumed that the pixels showing R1, B1 and G1 are provided to the display area 3, the right eye of the user 52 which is placed in the display area 3 recognizes a color image by the R1, B1 and G1 As described above, the image panel 130 can be implemented in the form that does not have a color filter. In order to provide a color image without the color filter, the backlight unit 1 10 can operate in the FSC method.

Figure 12 is a view illustrating the configuration of a powered display device, in the FSC method. With reference to Figure 12, the display device 100 further includes a controller 150 for controlling the drive of the FSC.

The controller 150 receives the RGB data in parallel and sequentially provides color signal for each pixel to the image panel 130. The controller 150 controls the image panel 130 to sequentially display the color signals for each pixel in the FSC method.

In addition, the controller 150 controls the backlight unit 1 10 to provide a plurality of lights of different colors, ie, lights R, G, and B to the pixels in the image panel 130 in synchronization with the display operation of the image panel 130. Accordingly, a color image can be made using a light source included in the backlight unit 10 and without the color filter. Consequently, it is not necessary to provide sub-pixels R, G, and B for each pixel, and as a result, the horizontal resolution can be increased to avoid deterioration of the resolution due to the visualization of the image of multiple viewing points.

For example, in the case of an FHD panel (full high definition), the horizontal resolution can be increased from 1920 to 5760. In the case of the use of an image panel 130 of UD class (Ultra Definition, 3840x2160), the FHD image (full high definition) that has the resolution of 1920x1080 can be implemented even though a 12-view 3D visualization is executed. That is, both 2D and 3D images can be seen in the FHD class.

Conversely, if a 9-view 3D visualization is executed in the FHD panel that has the resolution of 1920x1080 and that has the color filter, a class image (SD (standard definition)) with a resolution is displayed of 640x360. In the case of running a 9-view 3D visualization using the UD panel, a 1280x720 image (HD class) is displayed. Consequently, through the activation in the FSC method, a 3D visualization of more vision points having a better resolution can be implemented.

Figure 13 illustrates an example configuration of an image panel in a display device implemented in the FSC method. With reference to Figure 13, the parallax portion 140 is implemented by an array of lenticular lenses, and the width of a lens area has a size corresponding to a horizontal column size of 6 pixels.

With reference to Figure 13, the image panel 130 provides images of 12 views using 12 pixels P1 to P12 in total, which are scattered to rows of two pixels and columns of 6 pixels.

Figure 14 illustrates an example of 12 view images. With reference to Figure 14, the pixels P1 to P12 are masked in a zigzag fashion, and the light corresponding to the parts of the images appearing in the respective pixels P1 to P12 is scattered and is provided to the 12 display areas . Consequently, the interference can be reduced by viewing points in the respective display areas, ie, 3D areas. As described above, the masking can be done in various ways as shown in Figures 3 to 6. In the case of 2D, a 2D screen can be implemented by applying a piece of image information to all of the 12 pixels. As described above, if the image panel 130 is implemented by the UD panel, from which the color filter was removed, as described above, the 2D or 3D image can be operated simultaneously or individually.

Figure 15 illustrates views that explain various methods of displaying content using the FSC type image panel. With reference to (a) and (c) of Figure 15, the display device can provide 2D or 3D content with the resolution 1920x1080, or it can display a multi-view as shown in (b) of Figure 15. Specifically , as illustrated in (b) of Figure 15, the 3D content may show only one area of the screen and the 2D content may appear over the other area in a PIP (Image on Image) method. Instead, both the 2D and 3D content can be displayed together in the opposite method.

In the embodiments described above, it is described that the mask portion 120 is disposed between the backlight unit 10 and the image panel 130, but is not limited thereto. That is, the mask portion 120 may be constructed in the image panel 130, or it may be disposed on the side of the front surface of the image panel.

Figure 16 illustrates the configuration of a panel of images of a display device, according to another embodiment of the present disclosure. With reference to Figure 16, the mask 122 is formed on the color filter glass side in the image panel 130, and is arranged to cover only a portion of the liquid crystal portion. The size and shape of the mask can be changed in various ways in the modes illustrated in Figures 3 to 6. Accordingly, the light provided from the backlight unit 1 10 is transferred to the liquid crystals, as is , and the light projected from the liquid crystals is blocked by the mask 122, so that the interference between the respective vision point images can be reduced. In this case, the mask 122 itself corresponds to the mask portion 120 described above.

Figure 16 shows that only the mask 122 is constructed in the image panel 130. However, the mask substrate 121 may also be mounted on the image panel 130. In addition, the mask portion 120 may be attached to the surface front of the image panel 130.

According to various embodiments of the present disclosure as described above, the loss of resolution between the horizontal and vertical resolutions is dispersed, and therefore the loss of resolution is prevented from tilting only to one side. In addition, since the light of the respective points of view overlaps each other, interference can be prevented.

While the disclosure has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure. , as defined by the appended claims.

Claims

CLAIMS 1 . A multi-point of view visualization device comprising: an image panel 130 including a plurality of pixels configured to be arranged in a plurality of rows and columns. a backlight unit configured to provide light to the image panel; a parallax portion configured to be arranged on the front surface of the image panel; Y a mask portion configured to be disposed between the image panel and the backlight unit to partially mask the plurality of pixels. 2. The multiple view point image display device as claimed in claim 1, characterized in that the mask portion comprises a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of masking areas it is divided in a vertical direction to a light transmitting area and a light blocking area, and the light blocking area is arranged in a zigzag with respect to the pixels arranged in the direction of a row. 3. The device for displaying images of multiple vision points as claimed in claim 2, further characterized in that the light-blocking area is one-half the size of the corresponding pixel, and the light-transmitting area is the size of the other half of the corresponding pixel. 4. The multi-point vision image display device as claimed in claim 2, further characterized in that the plurality of the masking areas is aligned as a plurality of columns, and the direction of the zigzag arrangement of the blocking area of light is inverted for each of the columns of the respective masking areas. 5. The device for displaying images of multiple vision points as claimed in claim 4, further characterized in that the light-blocking area is one-half the size of the corresponding pixel, and the light-transmitting area is the size of the other half of the corresponding pixel. 6. The device for displaying images of multiple vision points as claimed in claim 1, further characterized in that the mask portion comprises a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of areas of The masking is divided into a light transmitting area and a light blocking area, and the light transmitting area is formed in a diagonal direction in the respective masking areas. 7. The device for displaying images of multiple vision points as claimed in claim 1, further characterized in that the mask portion comprises a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of areas of The masking is divided into a light transmitting area and a light blocking area, the light transmitting area being formed to be connected in a diagonal direction in at least two of the masking areas which are arranged in parallel in the direction of a row between the plurality of masking areas, and the light blocking area is formed in a remaining area, except for the light transmitting area in the masking area. 8. The device for displaying images of multiple vision points as claimed in claim 1, further characterized in that the mask portion comprises a plurality of masking areas configured to correspond to the plurality of pixels, each of the plurality of areas of masking is divided into a light transmitting area and a light blocking area, the light transmitting area is formed in a diagonal direction in the plurality of the masking areas, and the light transmitting areas formed in the respective masking areas are connected to each other 9. The multiple view point image display device as claimed in any of claims 1 to 8, further characterized in that the image panel is a UD (Ultra Definition) panel that does not include a color filter. 10. The multiple view point image display device as claimed in any of claims 1 to 8, further characterized in that the image panel sequentially displays color signals for each pixel according to an FSC (Sequential Field Color) method. , and the backlight unit provides a plurality of lights of different colors to the respective pixels in the image panel in synchronization with a display operation of the image panel. eleven . The device for displaying images of multiple vision points as claimed in claim 10, further characterized in that the image panel displays an image of multiple viewing points, by combining the plurality of pixels included in the plurality of rows and continuous columns. 12. The device for displaying images of multiple vision points as claimed in claim 1, further characterized in that the image panel shows an image of 12 vision points by combining 6 pixels arranged continuously in one horizontal direction and two pixels continuously arranged in a vertical direction. 13. The multiple view point image display device as claimed in claim 1, further characterized in that the parallax portion comprises a lenticular lens of which a plurality of lens areas are disposed in the direction of a column, and the The width of each of the lens areas corresponds to the size of each of the pluralities of pixels. 14. The multiple view point image display device as claimed in claim 1, further characterized in that the parallax portion comprises a parallax barrier from which a plurality of barrier areas are disposed in the direction of a column, and the width of each of the barrier areas corresponds to the size of each of the pluralities of pixels.